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Counting Atoms Self Check

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Last updated 12 months ago
16 questions
Practice Problems
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CHALLENGE QUESTION!
10

DIRECTIONS

Use your counting atoms practice worksheet to answer the questions below

Make sure the TOTAL number of atoms in the molecule matches the total listed on the worksheet

There is an OPTIONAL challenge question at the end that you must get 100% correct in order to get an AD for effort on this assignment
Question 1
1.
How many atoms of each element are in the following molecule?


Na: _______
C: _______
O: _______
Question 2
2.
How many atoms of each element are in the following molecule?


K: _______
Cr: _______
O: _______
Question 3
3.
How many atoms of each element are in the following molecule?


N: _______
H:_______
C: _______
O: _______
Question 4
4.
How many atoms of each element are in the following molecule?


Pb: _______
N:_______
O: _______
Question 5
5.
How many atoms of each element are in the following molecule?


Ca: _______
P:_______
O: _______
Question 6
6.
How many atoms of each element are in the following molecule?


Ba: _______
Cl:_______
Question 7
7.
How many atoms of each element are in the following molecule?


Al: _______
C:_______
O:_______
Question 8
8.
How many atoms of each element are in the following molecule?


N: _______
H:_______
Cr:_______
O:_______
Question 9
9.
How many atoms of each element are in the following molecule?


Al: _______
O:_______
H:_______
Question 10
10.
How many atoms of each element are in the following molecule?




Mg: _______
O:_______
H:_______
Question 11
11.
How many atoms of each element are in the following molecule?




Al: _______
S:_______
O:_______
Question 12
12.
How many atoms of each element are in the following molecule?


Zn: _______
S:_______
O:_______
Question 13
13.
How many atoms of each element are in the following molecule?


N: _______
H:_______
P:_______
O:_______
Question 14
14.
How many atoms of each element are in the following molecule?


Ca: _______
C:_______
H:_______
O:_______
Question 15
15.
How many atoms of each element are in the following molecule?


Sr: _______
P:_______
O:_______
Question 16
16.
Add coefficients, subscripts, and brackets to the molecule so that you have:
10 Aluminum (Al)
75 Sulfur (S)
60 Oxygen (O)

YOU WILL NEED TO USE ALL PARTS IN THE DRAG AND DROP BOX
______ Al_________________ ______ S________________ O________________ ______ ________________
Other Answer Choices:
subscript 4
subscript 5
5
subscript 3
)
subscript: 2
(